I just figured this out from several sources on the net, and my own tests:
A 2015 Chrysler with Uconnect (that has a USB and SD card slot for media) can handle larger than 32 GB SD cards, if they’re formatted to FAT32.
What worked for me:
- This 64 GB flash drive
- Formatted to FAT32 via this app (because Win 10’s native formatter won’t allow anything above 32 GB to be formatted to FAT32)
- and loaded with 9,707 MP3s (approx. 47 GB) (word is you shouldn’t have more than a few levels of folders; I just put everything in the root folder, because I intend to shuffle them all anyway)
works, although as expected:
- it takes a bit for it to index (a few minutes)
- Shuffle isn’t available until it indexes
- There’s a second or so delay when Nexting to another file, although it may have done this for smaller cards too.